How much heat is required to completely melt 1.37 mol of solid isopropyl alcohol at its melting point?

The data for the heat of fusion for the isopropyl alcohol is 3.301 kJ/mol. This data was taken from Parks and Kelly (1928). After acquiring this data, we can now calculate for the amount of heat:

(3.301 kJ/mol) x (1. 37 mol) = 4.52 kJ

Thus, the amount of heat required to completely melth 1.37 mol of solid isopropyl alcohol at its melting point (184 K) is 4.52 kJ.

Ido not understand.